problem with Statechart diagram

[gdanov]

Hi,
I am learning UML2 with a book and find some strange (for me) behaviours of EA :

• it seems that sub-state equals to statemachine for EA. If I create sub-state, I automatically get statemachine. In the spec these two things are separate.
  
• In the book I read (uml2 in a nutshell) entry and exit points are feature of the sub-machine states. However, in EA I can use these pseudostates only for States and not for State Machines (resp. sub-states). Other product alows me to put entry points on sub-states which are 'instance' of particular state machine
  
• I expect to be able to insert multiple sub-states of the same machine in one diagram, however could not do it. this works also with other modeling tool.
  

please advice, where is my mistake. Also, generally - where can I find good examples of state machines and other UML diagrams? Internet is full with Hello World level diagrams having 30 states and 100 transitions, but is really hard to find state machine uml diagram exploiting all the features (entry points for example!).
Or just recomend a book better than mine.